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authorKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2013-05-15 10:26:50 -0400
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2013-05-15 10:26:50 -0400
commit12e04ffcd93b25dfd726d46338c2ee7d23de556e (patch)
treef91479a62805619168994fd3ee55e3ffa23fc24e /drivers/irqchip/irq-gic.c
parent9eff37a8713939f218ab8bf0dc93f1d67af7b8b4 (diff)
parentf722406faae2d073cc1d01063d1123c35425939e (diff)
Merge tag 'v3.10-rc1' into stable/for-linus-3.10
Linux 3.10-rc1 * tag 'v3.10-rc1': (12273 commits) Linux 3.10-rc1 [SCSI] qla2xxx: Update firmware link in Kconfig file. [SCSI] iscsi class, qla4xxx: fix sess/conn refcounting when find fns are used [SCSI] sas: unify the pointlessly separated enums sas_dev_type and sas_device_type [SCSI] pm80xx: thermal, sas controller config and error handling update [SCSI] pm80xx: NCQ error handling changes [SCSI] pm80xx: WWN Modification for PM8081/88/89 controllers [SCSI] pm80xx: Changed module name and debug messages update [SCSI] pm80xx: Firmware flash memory free fix, with addition of new memory region for it [SCSI] pm80xx: SPC new firmware changes for device id 0x8081 alone [SCSI] pm80xx: Added SPCv/ve specific hardware functionalities and relevant changes in common files [SCSI] pm80xx: MSI-X implementation for using 64 interrupts [SCSI] pm80xx: Updated common functions common for SPC and SPCv/ve [SCSI] pm80xx: Multiple inbound/outbound queue configuration [SCSI] pm80xx: Added SPCv/ve specific ids, variables and modify for SPC [SCSI] lpfc: fix up Kconfig dependencies [SCSI] Handle MLQUEUE busy response in scsi_send_eh_cmnd dm cache: set config value dm cache: move config fns dm thin: generate event when metadata threshold passed ...
Diffstat (limited to 'drivers/irqchip/irq-gic.c')
-rw-r--r--drivers/irqchip/irq-gic.c39
1 files changed, 27 insertions, 12 deletions
diff --git a/drivers/irqchip/irq-gic.c b/drivers/irqchip/irq-gic.c
index a32e0d5aa45..1760ceb68b7 100644
--- a/drivers/irqchip/irq-gic.c
+++ b/drivers/irqchip/irq-gic.c
@@ -28,6 +28,7 @@
#include <linux/module.h>
#include <linux/list.h>
#include <linux/smp.h>
+#include <linux/cpu.h>
#include <linux/cpu_pm.h>
#include <linux/cpumask.h>
#include <linux/io.h>
@@ -38,12 +39,12 @@
#include <linux/interrupt.h>
#include <linux/percpu.h>
#include <linux/slab.h>
+#include <linux/irqchip/chained_irq.h>
#include <linux/irqchip/arm-gic.h>
#include <asm/irq.h>
#include <asm/exception.h>
#include <asm/smp_plat.h>
-#include <asm/mach/irq.h>
#include "irqchip.h"
@@ -127,7 +128,7 @@ static inline void gic_set_base_accessor(struct gic_chip_data *data,
#else
#define gic_data_dist_base(d) ((d)->dist_base.common_base)
#define gic_data_cpu_base(d) ((d)->cpu_base.common_base)
-#define gic_set_base_accessor(d,f)
+#define gic_set_base_accessor(d, f)
#endif
static inline void __iomem *gic_dist_base(struct irq_data *d)
@@ -236,7 +237,8 @@ static int gic_retrigger(struct irq_data *d)
if (gic_arch_extn.irq_retrigger)
return gic_arch_extn.irq_retrigger(d);
- return -ENXIO;
+ /* the genirq layer expects 0 if we can't retrigger in hardware */
+ return 0;
}
#ifdef CONFIG_SMP
@@ -323,7 +325,7 @@ static void gic_handle_cascade_irq(unsigned int irq, struct irq_desc *desc)
cascade_irq = irq_find_mapping(chip_data->domain, gic_irq);
if (unlikely(gic_irq < 32 || gic_irq > 1020))
- do_bad_IRQ(cascade_irq, desc);
+ handle_bad_irq(cascade_irq, desc);
else
generic_handle_irq(cascade_irq);
@@ -699,6 +701,25 @@ static int gic_irq_domain_xlate(struct irq_domain *d,
return 0;
}
+#ifdef CONFIG_SMP
+static int __cpuinit gic_secondary_init(struct notifier_block *nfb,
+ unsigned long action, void *hcpu)
+{
+ if (action == CPU_STARTING)
+ gic_cpu_init(&gic_data[0]);
+ return NOTIFY_OK;
+}
+
+/*
+ * Notifier for enabling the GIC CPU interface. Set an arbitrarily high
+ * priority because the GIC needs to be up before the ARM generic timers.
+ */
+static struct notifier_block __cpuinitdata gic_cpu_notifier = {
+ .notifier_call = gic_secondary_init,
+ .priority = 100,
+};
+#endif
+
const struct irq_domain_ops gic_irq_domain_ops = {
.map = gic_irq_domain_map,
.xlate = gic_irq_domain_xlate,
@@ -789,6 +810,7 @@ void __init gic_init_bases(unsigned int gic_nr, int irq_start,
#ifdef CONFIG_SMP
set_smp_cross_call(gic_raise_softirq);
+ register_cpu_notifier(&gic_cpu_notifier);
#endif
set_handle_irq(gic_handle_irq);
@@ -799,15 +821,8 @@ void __init gic_init_bases(unsigned int gic_nr, int irq_start,
gic_pm_init(gic);
}
-void __cpuinit gic_secondary_init(unsigned int gic_nr)
-{
- BUG_ON(gic_nr >= MAX_GIC_NR);
-
- gic_cpu_init(&gic_data[gic_nr]);
-}
-
#ifdef CONFIG_OF
-static int gic_cnt __initdata = 0;
+static int gic_cnt __initdata;
int __init gic_of_init(struct device_node *node, struct device_node *parent)
{